Improved refrigerator



W. M. BAKER.

Refrigerator.

Patented Dec, 15, 1863.

r, w r w -v 3 lnventon W 3W fl Witnesses= 2? AM. PHOTO-T310. co. N.Y.(OSBORNE'S .PRUCESS) UNITED STATES ATENT FFICE.

IV. IlI. BAKER, OF \VALPOLE, INDIANA, ASSIGNOR TO HIMSELF AND IV. R.HEATH, OF SAME PLACE.

IMPROVED REFRIGERATOR.

Specification forming part of Letters Patent No. 40,976, dated December15, 1863.

To all whom it may concern:

Be it known that 1, WV. M. BAKER, of Walpole, in the county of Hancockand State of Indiana, have invented a new and useful Improvement inRefrigerators; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings, making a part of this specification, in which-Figure 1 is a vertical section of my invention, taken in the line a: 00,Fig. 2; Fig. 2, a

vertical section of the same, taken in the line 3 3 Fig. 1.

Similar letters of reference indicate corresponding parts in the twofigures.

This invention relates to an improven'ient on a refrigerator for whichLetters Patent were granted to me bearing date July 18, 1868.

The object of the invention is to supply the interior of therefrigerator with cold dry air, and to carry off from within the formerall gaseous impurities, as hereinafter fully set forth.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

Arepresents the external case of the refrigerator, constructed of wood,and B is the internal case, constructed of metal, both cases restingupon a suitable base, 0, and having the space a between them filled withany substance which is a good non-conductor of heat.

D is an ice-chamber placed in the upper part of the inner case, B.

E are chambers, and E chutes communieating with the ice-chamber.

F are gratings or shelves on which the provisions are placed, and G thefilterchamber placed within or underneath the base 0. These parts areall shown and described in my patented refrigerator of July 18, 1863,and therefore do not here require a special description.

In the lower part, or underneath the icechamber D, there is placed aclose chamber, H, the latter extending the whole length of theice-chamber.

I is a tube which passes horizontally through the filter-chamber G, andextends upward by the side of the inner case, B, and passes into thechamber H near one end of it. Near the opposite end of the chamber H atube, J, is inserted,-and this tube J extends down by the outer side ofthe case B, and enters it near its lower end, as shown at b. the tube Jcommunicates with the external air, and a valve or slide, 0, is fittedover it, as shown in Fig. 1.

The operation is as follows: The chamber H is kept cold or at a lowtemperature by the ice-chamber D, the drippings from the latter fallingupon and circulating around the former. The warm external air rushesthrough the tube 1 and into the chamber H. This air is partially cooledin passing through the portion of the tube I which is in thefilter-chamber G,as the filtering material is kept in a passably coolstate by the ice-water passing through it, and said air is furthercooled in passing through the chamber H. The air, it will be seen, whilebeing thus cooled,is kept perfectly dry, as it does not come in contactwith ice or any moisture whatever. The cold dry air passes from thechamber H down the tube J and into the lower part of the inner case, B,and thence passes up at the back part of B and escapes through aventilator, K, at the top, said ventilator having a valve, L, at itsupper end. The direction of the current of air is indicated by redarrows. The volume of the current of cold air may be regulated byadjusting the valves 0 L.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The air-tubes I J and air-chamber H, in combination with the ice-chamberD and ventilator K, all being arranged in relation with the inner case,B, to operate in the manner substantially as and for the purpose hereinset forth.

W. I. BAKER.

W'itnesses:

O. A. HEATH, GEO. R. RIDDLE.

The outer end of

